Name two ways rock layers can change

Answer:

According to the video, fossils provide each of the following except:

b. A complete record of past life on Earth

Explanation:

The reasons behind this answer are that one single fossil can include the whole record of life forms on earth's history. It might only contain a fraction of a form of life because the majority of fossils don't include more than woven bone. Therefore, it is only a fraction of the living being. also, it doesn't contain a record of its evolutionary chain or that the species of the fossil became extinct. We could find a crocodile fossil and they are still alive in modernity.

Answer:

b. It secretes sweat, which raises the pH of the skin and kills pathogens is the correct answer.

Explanation:

The first line of defense such as skin, mucus, tears, urine flow protects from the pathogens and prepare to protect the body from germs and infections.

Skin secretes swear that raise the pH makes the sweat acidic and then the sweat present in the skin provide protection to the body by killing the unwanted pathogens as some pathogen are not able to survive in acidic conditions.

Skin secretes sweat that contains a chemical dermcidin that breaks the bacteria and kills the pathogens.

Answer:

The human respiratory and circulatory systems work together to supply the body with oxygen and get rid of waste carbon dioxide.

Answer:  Our respiratory and circulatory systems have to work together, the respiratory system takes oxygen from the air we breathe into our lungs, the oxygen is transferred to the blood, the circulatory system then transfers the blood, which transfers the oxygen to the cells for the rest of the body.

Explanation: Edg 2020

Final answer:

The incorrect statement in describing the structure of the ear is B) The inner ear consists of the auricle and auditory ossicles. The auricle is part of the outer ear, and the auditory ossicles are in the middle ear, not the inner ear.

Explanation:

If you were explaining the structure of the ear to a friend and considering what components would not be part of such an explanation, let's evaluate the options provided:

A) The middle ear consists of the malleus, incus, and stapes. - This statement is correct. The middle ear does contain the three ossicles: malleus (hammer), incus (anvil), and stapes (stirrup).

B) The inner ear consists of the auricle and auditory ossicles. - This statement is incorrect. The auricle and auditory ossicles are not part of the inner ear; the auricle is part of the outer ear, and the auditory ossicles are part of the middle ear.

C) The outer ear consists of the auricle and the external acoustic meatus. - This is a correct description of the outer ear, which includes the auricle (also known as the pinna) and the external acoustic meatus (ear canal).

D) The inner ear contains canals filled with fluid. - This is accurate. The inner ear contains the cochlea and semi-circular canals, which are indeed filled with fluid.

Therefore, the correct answer is B, as it includes elements that are not part of the inner ear's structure.

Answer:there would be an increased level of carbon dioxide

Explanation: carbon dioxide is one of the gases that is produced from the fumes of automobiles. It is released when animals respire. In developed urban areas, there are large population of automobiles and the rate of burning of fossil fuel is high. There is also a high population of people and this further increase the carbon dioxide level, causing pollution. Trees are supposed to take in carbon dioxide for the photosynthesis. But when the amount of vegetation is reduced,carbon dioxide accumulates. This causes air pollution and global warming which is disastrous for the earth.

An increase in the level of carbon dioxide causes the heat in the earth to be trapped ,just like in a green house.this causes the earth to warm up more than usual

Answer:

the answer for me is the third option (c)

Answer:

Descriptive investigations are not repeatable because they are based only on observations made at a single point in time. The results may vary at a different time. In addition, descriptive investigations do not contain variables that may indicate cause-and-effect relationships.

Explanation:

Answer:

Proteins

Explanation:

Amino acids are the building blocks of proteins

Some proteins are just a few amino acids long, while others are made up of several thousands

Proteins, unlike vitamins, minerals, and carbohydrates, are composed of amino acids. They play significant roles in the body such as catalyzing metabolic reactions and transporting molecules.

Among the options provided - vitamins, minerals, carbohydrates, and proteins, it's proteins that are composed of amino acids. Proteins are essential macromolecules in our body that are comprised of one or more chains of amino acids. They play a wide range of roles in our body, including catalyzing metabolic reactions, DNA replication, responding to stimuli, and transporting molecules from one location to another. Conversely, vitamins, minerals, and carbohydrates are not made up of amino acids.

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Answer:

A. spiral galaxies are not pinwheel-shaped

Explanation:

There are three types of galaxies that include spiral galaxy, elliptical galaxy and irregular galaxy.

Elliptical galaxies are round shaped as well as elongated. Elliptical galaxies have both old and new stars but mostly it contains old stars.

Spiral galaxies are pinwheel-shaped due to the regular spinning motion of dust, stars and gas around the galactic center, at speeds of hundreds of kilometers per second which allows the matter to take a  pinwheel-shape. Spiral galaxies are made up of lot of gas and dust and forms many new stars which allows the spiral galaxy to shine bright.

Irregular galaxies do not have any definite shape because of the gravitational influence of close galaxies. They also have many new stars.

Hence, the error is foudn in first sentence, where it says that spiral galaxies are not pinwheel shaped. so teh correct option is A.

Answer:

Xiao can use these structures to create a similarity matrix that enables to differentiate between synapomorphies and homoplasies .

Explanation:

A synapomorphy is a trait that has been inherited from the same ancestor, this trait enables to establish a relation of homology between two or more species; while a homoplasy is an analog structure that doesn't have homology.

Xiao can use these structures to form a similarity matrix which enables to distinguish between synapomorphies and homoplasies.

Similarity matrix is defined the elements measure pairwise similarities of objects in which the greater similarity of two objects, the greater the value of the measure.

A synapomorphy is a trait which has been inherited from the same ancestor, this trait validate to establish a relation of homology between two or more species, whereas a homoplasy is an cognate structure that does not have homology.

Fore information regarding synapomorphy, visit:

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Answer:

On April 13, 2029, Apoptosis will pass Earth closer than geosynchronous communication satellites, but will come no closer than 31,200 kilometres (19,400 mi) above Earth's surface.

Explanation:

Final answer:

Apophis is not expected to hit Earth in 2029. Earth-approaching asteroid orbits are unpredictable over very long timescales, but Apophis has been closely monitored and is not considered a threat. The probability of a catastrophic asteroid impact in the near future is very low thanks to ongoing surveillance projects and impact prevention technologies.

Explanation:

The asteroid known as Apophis is projected to make a close approach to Earth in the year 2029, but it is not currently expected to hit our planet. While the orbits of Earth-approaching asteroids can be predicted over short time scales, they are significantly affected over longer periods due to gravitational interactions with the planets. However, dramatic destabilizing events like impacts or gravitational ejections are expected on timescales of about a hundred million years, which is a very short time in comparison to the solar system's age.

It is important to continue monitoring such near-Earth objects (NEOs) for any course changes. Though the chances of a catastrophic impact are slim, our capability to predict and potentially avert disaster improves as we enhance our technology and understanding. Initiatives like the NASA Double Asteroid Redirection Test (DART) mission and the Spaceguard Survey work to identify hazardous asteroids and develop strategies to protect Earth from possible future impacts

Answer:

Science is used to describe the knowledge about the universe and the method of obtaining that knowledge

The word science describes knowledge about the universe and its methods of acquisition using evidence and logic. It involves the scientific method, a systematic process of observation, experimentation, and hypothesis testing. Science seeks to explain general truths and natural laws.

The word used to describe knowledge about the universe and the method of obtaining that knowledge is science. Science is a distinctive way of gaining knowledge about the natural world that tries to answer questions using evidence and logic. It covers general truths or the operation of general laws, especially when acquired and tested by the scientific method.

The scientific method is a systematic process of observation, experimentation, and hypothesis testing. For instance, to understand the laws of motion, scientists observe natural phenomena, formulate hypotheses, conduct experiments, and revise their theories based on the acquired data.

Answer:

The cell process that causes grow and repair of  body cells including skin and nails is called mitosis.

The process of mitosis increases number of cells and enable them grow and also replaces the dead cells or lost cells with new cells for proper functioning of cells. Mitosis is important for the replacement of cells which constantly lost and grow.

In the mitosis process, parent cell split into twin daughter cell and carry identical DNA which helps in replacement of lost cells and growth of cell as in skin and nails.

Hence, mitosis helps in the renewal and growth of skin cells and nails.

Answer:

Erosion

Explanation:

The smoothness of the river rock is attributed to prolonged erosion by water and sand, similar to the erosion process that smooths mountain ranges on Earth. The absence of water and ice on the Moon results in its mountains having a naturally smoother appearance.

The smooth surface of the river rock that Juan noticed is most likely the result of erosion by water and possibly sand over a long period of time. This natural process occurs as rocks are tumbled and rolled along the riverbed by the flowing water, causing their surfaces to become smoothed as rough and sharp edges are gradually worn away. The consistent action of water and sand, much like sandpaper, erodes the rock's surface, making it smooth.

This explanation is similar to how mountain ranges can become smooth over time. After mountains are formed by the upthrust of the Earth's crust, erosion plays a key role in shaping their appearance. Factors such as water and ice can wear down the sharp peaks and serrated edges of mountains, leading to smoother, rounded forms. On bodies like the Moon, where there is no water or ice, mountains remain with a smoother appearance due to the lack of these erosive processes.

Answer:

B

Explanation:

During the third week after fertilization, the embryo begins to differentiate cellularly. Differentiation is the process through which unspecialized cells become specialized. Differentiation happens when certain genes are activated while others are silenced.

A few days after fertilization, cells have started differentiating, which is in Option B, as here, after the zygote formation, there is the formation of the morula, blastula, and gastrula, and then finally the baby is produced.

In the cleavage process, the single-cell zygote rapidly divides into multiple cells and then continues to divide and differentiate into different types of cells that will eventually form all of the different tissues and organs of the developing embryo, including cells such as those of the nervous system, the heart, the muscle, the skin, and so on.

Hence, a few days after fertilization, cells have started differentiating, which is in Option B, as here, after the zygote formation, there is the formation of the morula, blastula, and gastrula, and then finally the baby is produced.

Learn more about cell division here.

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Answer: Option B.

Mitochondria.

Explanation:

Mitochondria are membrane bound organelles that is found in the cytoplasm of cells of Eukaryotic organisms. They are responsible for generating energy in the cells , hence they are called the power house. They produce chemical energy in the cells in form of adenosine triphosphate (ATP) needed for cells activities and processes.

The 'powerhouse' of the cell, mitochondria, produces ATP to fuel various cellular activities.

The organelle that has a similar function to fuel cellular activities is the mitochondria. The mitochondria are often referred to as the 'powerhouse' of the cell. This is because it is primarily responsible for producing ATP, the primary form of cellular energy, through a process called cellular respiration. During this process, glucose obtained from food sources is broken down to release energy which is then stored in ATP molecules. These ATP molecules are used to fuel various cellular activities such as cell division, protein synthesis, and transport of substances across the cell membrane.

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Answer:

It can move unwanted materials such as rocks and broken trees into these places and ruin homes for the animals living in ponds, rivers, or streams

Explanation:

Runoff water from the farm to land and golf courses can be dangerous for organisms that live in ponds, rivers or streams, because they can carry invasive animals and pollutants.

Pollutants are solid particles and gases dispersed in atmospheric air, water and soil, resulting from both human activities and natural phenomena. The main sources of pollutants are

With this information, we can conclude that Runoff water from the farm to land and golf courses can be dangerous for organisms that live in ponds, rivers or streams, because they can carry invasive animals and pollutants.

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Answer:

C.  A diverse population of bacteria attacking the body is much more economical than just one population of bacteria.

Answer:

C.  A diverse population of bacteria attacking the body is much more economical than just one population of bacteria.

Explanation:

I don't see any picture. Maybe you forgot to include it...

Answer:

How do the industrial, agricultural, and residential activities of humans most likely affect the groundwater in the area? The activities prevent most of the water from evaporating into the atmosphere. Pollutants from the activities percolate through the soil and enter the water table.

Explanation:

The Things Stop most of the water from Boiling into Smoke to go to the atmosphere. Which is Pollutants from the activities percolate through the soil and enter the water table

Answer:

Weather conditions

Explanation:

Food can be limited based on location, however, scientists can control what kind of food it is. Soil can be tested and experimented on. There can be a lot of it and different kinds. Space is fought over because of territories and is limited compared to how many people and animals there are. Weather is not something that can be controlled in an experiment since it is sporadic.

Answer:

The population of the species.

Explanation:

This one took a bit of thought, but here is my conclusion.

If there is more population, there is higher demand on resources such as food, water, and shelter. With less to go around, the species will start to compete more for the limited resources, therefore increasing the competition.

Hope this helps!

Answer:

3) Low gradient, high volume

4) High gradient, Low velocity

5) High gradient, high velocity

Explanation:

Just answered this on Edge

Conditions resulting in the erosion of larger rocks include high gradient with b) high velocity and low gradient with high velocity when accompanied by high volume, as both scenarios provide the energy necessary for erosion.

The conditions that resulted in the erosion of larger rocks include a combination of factors such as stream-channel gradient and water velocity. A high stream-channel gradient, typically found in mountainous regions, increases the capability of a stream to erode material due to a steeper slope, leading to a faster flow and more energy for erosion.

Conversely, water with high velocity, regardless of gradient, has the power to pick up and transport larger particles. Therefore, the conditions that can result in the erosion of larger rocks are likely high gradient, b) high velocity, and possibly low gradient, high velocity if volume is also high.

Answer: conduction

Explanation: transfers heat energy through gases or liquids.

Since 2000, melting ice from the continent totaled enough to raise sea levels globally by about four tenths of an inch, according to the report which relied on the work of 90 scientists.  With what’s already baked into the atmosphere, faster melting land ice will likely add between 7.5 and 9.8 inches to earlier U.N. estimates by 2100, the report said.  And because of its position downstream, in an area of “preferential excitement,” South Florida could experience rise at the high end as water sloshes around the planet, Kirtman said.  “Think of it as pushing down the ocean [in Greenland]. The ocean is fluid, so it’s going to respond somewhere else and that somewhere else is down here,” he said.  In South Florida, planners already confronting flooding from sea rise have been more aggressive in assessing sea rise.

Explanation:

Answer:

Uranium

Explanation:

The heaviest element in nature is uranium, which has 92 protons

The element with the greatest number of protons is Oganesson (Og), which has 118 protons. The atomic number of an element determines the number of protons in its atoms.

The element with the greatest number of protons is Oganesson (Og), which has 118 protons. The number of protons in an atom is called the atomic number and defines the element. Each element has its own characteristic atomic number, which is determined by the number of protons in its atoms.

For example, hydrogen has an atomic number of 1, iron has an atomic number of 26, carbon has 6 protons, and tin has 50 protons. The atomic number also tells you how many electrons are in a neutral atom of that element.

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